SUMNER COUNTY, KANSAS
THE WHEAT CAPITAL OF THE WORLD
Sumner County is located in south-central Kansas (Central Time Zone) twenty-three miles south of Wichita and abutting the Oklahoma border. Sumner County is part of the Wichita Metropolitan Statistical Area. The County encompasses 1,185 square miles and the population in 2010 was 24,132. The County seat is the City of Wellington with a population of 8,172 (2010). The County is home to eleven incorporated communities, they are Argonia, Belle Plaine, Caldwell, Conway Springs, Gueda Springs, Hunnewell, Mayfield, Milan, Oxford, South Haven, and Wellington. A portion of the City of Mulvane also lies in Sumner County. There are a number of smaller communities located within the county that are not incorporated.